At 4-5 weeks after the completion of the last induction chemotherapy course, responsive patients in both arms receive BEAM conditioning chemotherapy comprising carmustine IV over 60 minutes on day -6, etoposide IV over 60 minutes and cytarabine IV over 30 minutes on days -5 to -2, and melphalan IV over 15 minutes on day -1. Patients undergo autologous peripheral blood stem cell transplantation on day 0. After transplantation, patients in partial remission may undergo radiotherapy to nodal sites with residual tumor mass.